package com.spring.security.controller;

import com.spring.security.properties.SecurityProperties;
import com.spring.security.surport.SimpleResponse;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.savedrequest.HttpSessionRequestCache;
import org.springframework.security.web.savedrequest.RequestCache;
import org.springframework.security.web.savedrequest.SavedRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @ClassName BrowserSecurityController
 * @Description BrowserSecurityController
 * @Author 朱秒
 * @Date 2020/2/22 16:41
 * @Version 1.0
 */
@RestController
public class BrowserSecurityController {
    private Logger logger = LoggerFactory.getLogger(getClass());
    private RequestCache requestCache = new HttpSessionRequestCache();
    private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
    @Autowired
    private SecurityProperties securityProperties;
    /**
     * 当需要身份认证的时候跳转到这里
     * @param request
     * @param response
     * @return
     */
    @RequestMapping("/authentication/require")
    @ResponseStatus(code = HttpStatus.UNAUTHORIZED)
    public SimpleResponse requireAuthentication(HttpServletRequest request, HttpServletResponse response) throws IOException {
        SavedRequest savedRequest = requestCache.getRequest(request, response);
        if(savedRequest != null){
            String targetUrl = savedRequest.getRedirectUrl();
            logger.info("引发跳转的请求是:{}", targetUrl);
            if(StringUtils.endsWithIgnoreCase(targetUrl, ".html")){
                redirectStrategy.sendRedirect(request, response, securityProperties.getBrowser().getLoginPage());
            }
        }
        return new SimpleResponse("访问的服务需要身份验证，请引导至登录认证页面。");
    }
}
